Core disk and method of making same



March 3, 1953 McGREGOR 2,630,218

CORE DISK AND METHOD OF MAKING SAME Filed Aug. 17, 1950 INVENTOR. DAV 0 2055 MC 626602 Patented Mar. 3, 1953 UNITED STATES PATENT ()FFICE CORE DISK AND METHOD OF MAKING SAME David Ross McGregor, Springfield, Ohio Application August 17, 1950, Serial No. 179,919

3 Claims. 1

This invention relates to a core disc and the method of making the same and more particularly to a core disc for retaining a coil of wire in proper form from the time that it leaves the factory until it is used.

An object of this invention is to provide a device for securing the tie wires used in wrapping a coil of wire in position so as to prevent the tie wires or bands from creeping around the periphery of the coil of wire. By holding the tie wires in proper spaced relation, the coil of wire retains its form from the time it leaves the factory until it is ready to be used.

Another object of this invention is to provide a core disc for holding the tie wires or bands in position, which core disc is inexpensive, easily produced and at the same time dependable and eflicient.

Other objects and advantages reside in the construction of parts, the combination thereof and the mode of operation, as will become more apparent from the following description.

Referring to the drawings,

Figure 1 is a top plan view of a coil of wire having the core disc mounted therein.

Figure 2 is an enlarged cross sectional view taken substantially on the line 2-2 of Figure 1.

Figure 3 is a cross sectional view of the coil and a disc mounted upon the support in readiness to be press-fitted into the coil.

In the use of baling wire for use in hay balers, it is necessary to deliver the coil of wire to the baling box in perfect condition. If the convolutions of wire forming the coil become dislodged, the wire, upon being withdrawn from the coil, snarls and kinks so that it cannot be used. That being the case, applicant has developed a process of carefully winding the wire so that each layer consists of a plurality of closely spaced and uniformly spaced convolutions. If the coil of wire can be delivered in this condition, no difiiculty is encountered in using the baling wire in a hay baler.

In the past, it has been the practice to bind or tie the coil as soon as it has been wound by a plurality of tie bands or wires wrapped around a coil of wire 12. In shipping coils of wire tied by the bands ID, as shown in the drawings, there was a tendency for the tie bands It to creep together, so that all four wires shown in the drawings would eventually be contiguous to each other, thereby permitting the convolutions of wire to fan out, so that the convolutions would be separated from each other excepting in the area where the four wire surround the convolutions.

2 That being the case, the four wires or bands did not always prove satisfactory in holding the coil of wire in place. Baling wire is sold in a very highly competitive field.

Applicant has solved this problem by providing a disc 20, the diameter of which is slightly greater than the inside diameter of the coil of wire. For example, for a coil of wire having a diameter approximately four and three-fourths inches (4%), a disc four and seven-eighths inches (4%) may be used. This disc may be made from suitable cardboard, plastic or fiber. The thickness of the disc may be on the order of one-sixteeth inch These dimensions have been used merely for the purpose of illustration, in that the dimensions may vary, depending upon the material and the particular requirements. The coils of wire may vary in size and consequently the core discs also vary in size.

The disc 20 is placed upon a round support 22, the outside diameter of the support 22 being slightly less than the inside diameter of the coil. The coil 12 is then dropped on top of the disc and is arrested by suitable stops 24 supporting the coil, with the core disc 20 in the center thereof. Since the disc 20 has a diameter larger than the inside diameter of the coil, it can readily be seen that the margins of the disc will form a flange 26, positioned on the inside of the coil. The material forming the disc is preferably a material that is quite firm and that being the case, the flange 26 exerts a pressure outwardly against the adjacent convolutions of the coil. The wires H) cut or form recesses or notches 28 in the periphery of the core disc 20, so that the tie wires or hands, in the event bands are used, cut their own notche 28 in the core disc 20, thereby preventing the tie wires or bands from creeping on the coil while being handled and shipped. By utilizing the core disc which is press-fitted into position nd firmly seated in position, the tie wires or bands are held in non-rotative position on the coil l2, thereby retaining the tie wires in position during shipment. It ha been found that this core disc eliminates the difficulty of the tie wires or bands creeping out of position.

The drawings disclose wires It] used in wrapping the coil. Instead of wires, steel bands may be used equally as well. The core disc will retain the steel bands in position as well as wire. Although the core disc has been described for use with baling wire, it may be used on other types of wire coils Where it is desirable to retain thie1 tie wires or hand in a fixed position on the co ing out the objects set forth, as disclosed and defined in the appended claims.

Having thus described my invention, I claim:

1. The method of holding tie bands or wires in fixed spaced relation on a coil ofwire having an opening through the center thereof, said method including the steps of forming a disc having a diameter slightly larger than the diameter of the aperture through the coil, mounting the disc upon a support having a diameter slightly smaller than the diameter of the aperture through the coil, dropping the coil over the disc mounted on the support so as to position the disc near the center of the coil, the tie bands or wires forming notches in the margins of the disc, the disc being press-fitted into position holding the tie bands or wires in positionso as to hold the tie bands or wires on the coil.

2. The combination comprising a coil of wire formed from a multiplicity of convolutions of Wire having a cylindrical aperture through the center thereof, retaining tie wires Wrapped around the convolutions of the coil of wire, and a core disc mounted in the center of the aperture with the edges of the disc in contact with the wall of the aperture and having a diameter equal to the inside diameter of the coil, the core disc being provided with an annular flange having an outside diameter equal to the inside diameter of the coil, the outer edges of the flange being mounted in contact with the periphery of the aperture, said core disc having notches in the periphery thereof, one for each of the tie bands or Wires, so as to hold the tie bands or wires in fixed spaced relation.

3. The combination comprising a coil of wire formed from a multiplicity of convolutions of -wire having a cylindrical aperture through the center thereof, retaining tie wires wrapped around the convolutions of the coil of wire, and a core disc mounted in the center of the aperture with the edges of the disc in contact with the Wall of the aperture and having a diameter equal to the inside diameter of the coil so that the core disc is held in position by a press fit, said core disc having marginal notches in which the tie bands or wires are fixedly held in position on the coil.

DAVID ROSS MCGREGOR.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 784,794 Kimball Mar. 14, 1905 1,008,924 Orr Nov. 14, 1911 2,145,358 Kronquest Jan. 31, 1939 2,269,939 Janisch Jan. 13, 1942 

